Heading towards Portsmouth harbour. 23/03/07

WEAPON SYSTEMS
Two Thales Nederland (formerly Signaal) Goalkeeper close in weapon systems are installed on the bow deck and on the upper deck immediately overlooking the helicopter landing deck. Goalkeeper's Gatling-principle 30mm gun provides a maximum firing rate of 4,200 rounds/min with a range of 1,500m.
To support the Goalkeeper CIWS, a Thales Nederland IRSCAN infrared search and track system is fitted. IRSCAN can detect and track targets to a maximum range of 20km.
Four Oerlikon 20mm guns are located on the bridge deck. Rotterdam has the capacity to carry up to 36 torpedoes in the magazine area.
AIRCRAFT
The 58m x 25m flight deck has landing spots for two large helicopters such as the EH101.
The aircraft hangar is sufficiently large to accommodate up to four EH101 helicopter or six medium-size helicopters such as the Super Puma or the NH90. The hangar has extensive helicopter maintenance and spares facilities.
COUNTERMEASURES
The ship's decoy system consists of four SRBOC (Super Rapid Blooming Offboard Countermeasures) decoy launchers from Lockheed Martin Sippican, which fire infrared decoys and chaff for confusion, distraction and seduction of incoming anti-ship missiles. It is also fitted with the AN/SLQ-25 Nixie towed torpedo decoy, from Sensytech Inc of Newington, Virginia.
SENSORS
The radar suite includes: Thales Nederland DA08 air and surface search radar operating at E and F bands, Kelvin Hughes ARPA surface search radar operating at I-band and two sets of navigation and aviation radar operating at I-band.
HrMs Johan de Witt has been fitted with the Thales Nederland VARIANT 2-D Mk 2 air and surface surveillance radar.
PROPULSION
The ship is equipped with four Stork Wartsila diesel generators, model 12SW28 generating 14MW, and two Holec motors generating 12MW, driving two shafts. The bow thruster is rated at 185kW. The top speed is over 18kt, and the range at 12kt is over 6,000 miles.